Redline Xtreme has more caffeine than Dunkin iced coffee (medium) on both counts: 316mg per 8 oz bottle against 297mg per 24 oz medium, and about 40mg per fluid ounce against 12. The serving sizes differ, so the table below shows both ways of counting.
These are different categories of drink, which changes how the caffeine arrives. Energy drinks and sodas list an exact number because caffeine is a measured additive; brewed drinks vary with the beans and the brew, so their figures are compiled averages. The numbers here are the standard published values for each.
Redline Xtreme vs Dunkin iced coffee (medium): the numbers
| Redline Xtreme | Dunkin iced coffee (medium) | |
|---|---|---|
| Caffeine per serving | 316mg per 8 oz bottle | 297mg per 24 oz medium |
| Caffeine per fl oz | 39.5mg | 12.4mg |
| Servings to reach 400mg (FDA context) | 1.3 | 1.3 |
Sources: Redline Xtreme's figure is verified in our Redline Xtreme caffeine guide against Caffeine Informer (source); Dunkin iced coffee (medium)'s figure is verified in our Dunkin iced coffee (medium) guide against Caffeine Informer Dunkin guide (source).
The concentration gap is the striking part: Redline Xtreme packs roughly 3 times the caffeine per ounce. Sipping speed matters at that density; a 8 oz bottle finished in minutes hits differently than the same milligrams spread over a slow cup.
Which one should you pick?
Pick Dunkin iced coffee (medium) when you want the lighter dose or a slower ramp, and Redline Xtreme when you actually need the bigger hit and know your tolerance. If you are stacking either with other caffeinated drinks through the day, run the math against the 400mg reference rather than guessing.
For context, the FDA cites 400mg of caffeine a day as an amount generally not associated with negative effects in healthy adults. Tolerance and health vary, so treat these numbers as information, not advice.
Related reading
- Redline Xtreme: the full caffeine guide
- Dunkin iced coffee (medium): the full caffeine guide
- The verified caffeine database
- Every drink compared: the comparisons index
- Compare any two of 120+ drinks
FAQ
Does Redline Xtreme or Dunkin iced coffee (medium) have more caffeine? Redline Xtreme: 316mg per 8 oz bottle versus 297mg per 24 oz medium for Dunkin iced coffee (medium).
Which is stronger per ounce? Redline Xtreme, at about 39.5mg per fluid ounce versus 12.4mg for Dunkin iced coffee (medium).
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